I Gede Bagus Jayendra, Rizky Ajie Aprilianto, Khoirudin Fathoni
Wireless power transfer (WPT) is a groundbreaking method that enables seamless energy transfer. It has progressed rapidly and is widely implemented due to its high efficiency and reliability. Also, WPT can be implemented in future works, such as electric vehicles (EVs), to provide more convenient charging. The difference in distance between the WPT coils is a primary issue correlated with the efficiency result. Hence, designing and optimizing the placement of WPT coils is crucial to achieve the best efficiency and minimize energy losses. This study proposed a magnetic resonance model based on a spiral-type model for WPT and its efficiency estimation value within the 6.78-MHz ISM (Industrial, Scientific, Medical) band. The ISM Band is used because of its non-licensed use in various applications and is more flexible for research and development needs, including WPT. The WPT model is designed and simulated using Analysis System (ANSYS) and Twin Builder. The results show that the coupling coefficient value and measured voltage are inversely proportional to increasing values of the two-coil gap in the proposed model. The magnitude ratio reaches 99.9699% for the 6.78 MHz ISM band. Hence, this band makes physical dimension reduction possible for WPT components such as the transmitting (Tx) and the receiving (Rx) I coils. © 2024 IEEE.
Universitas Negeri Semarang, Department of Electrical Engineering, Semarang, Indonesia
